11143221345 has 24 divisors (see below), whose sum is σ = 19502448576. Its totient is φ = 5885349408.

The previous prime is 11143221337. The next prime is 11143221359. The reversal of 11143221345 is 54312234111.

11143221345 is a `hidden beast` number, since 1 + 11 + 432 + 213 + 4 + 5 = 666.

It is not a de Polignac number, because 11143221345 - 2³ = 11143221337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1197439 + ... + 1206708.

It is an arithmetic number, because the mean of its divisors is an integer number (812602024).

Almost surely, 2^11143221345 is an apocalyptic number.

11143221345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11143221345 is a deficient number, since it is larger than the sum of its proper divisors (8359227231).

11143221345 is a wasteful number, since it uses less digits than its factorization.

11143221345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404261 (or 2404258 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

Adding to 11143221345 its reverse (54312234111), we get a palindrome (65455455456).

The spelling of 11143221345 in words is "eleven billion, one hundred forty-three million, two hundred twenty-one thousand, three hundred forty-five".